Stove



Sept. 24, 1929. c. w. HUGY 1,729,218

STOVE .F'ilec i NOV. 21, 1928 1A! YEA/TOR A TTQRA/By Patented Sept. 24, 1929 UNITED STATES CHARLES W. HUGY, OF SA1\T JOSE, CALIFORNIA STOVE Application filed November 21, 1928.

This invention relates to that type of stoves commonly known as air-tight heaters. In this type of stove the pipe for carrying away the smoke and gases is located and connected to the back of the stove top and a single vent is provided in the front of the stove to permit the introduction of air in desired quantities, the air being introduced into the fuel mass at its lower front portion. The result of this arrangement is that regulation of the front vent to permit the introduction of currents of air of varying volumes does not result in corresponding accurate control of the burning fuel within the stove, largely for the reason that the smoke and gases collected above the fuel in the forward part of the fuel chamber is but little affected by the air current passing from the vent to the smoke pipe. As this gas collects it gradually builds up sufficient pressure to raise the stove lid, resulting in the well known puff that discharges a quantity of unburned smoke and gases into the room. Furthermore, in this type of stove the air is introduced in such a manner as to induce continued rapid combustion of the fuel even when introduced in small quantities.

It is one object of the present invent-ion to provide a stove of the character indicated wherein the air is introduced into the combustion chamber in such a manner as to prevent the collection of smoke and gases in the confined space above the fuel mass, and consequently to prevent the discharge of such gases and smoke into the room.

It is another object of the invention to provide a stove construction of the charac- 40 ter indicated wherein the air stream is so divided and controlled as to effect the complete combustion of the fuel in the stove chamber and substantially reduce the amount of smoke and gases carried ofi through the smoke pi e.

It is still another object of the invention to provide a stove construction of the character indicated wherein the air stream is so divided and controlled as to effectually control the speed with which the fuel is con- Serial No. 321,006.

sumed whereby the heat generated may be I usefully employed.

Finally it is an object of the invention to provide a structure of the character indicated that will be simple in construction, economical to manufacture, of few parts, readily adaptable to old stoves as well as new, and highly efiicient in its practical application.

In the drawing:

The figure is a side elevation of a stove embodying my invention, partly in section and part broken away.

Referring now more particularly to the drawing, I show at 1 the body portion of an air-tight, sheet metal stove. .The smoke pipe is shown in part at 2 connected to the back of the top 3. On the forward portion of the top is an opening 4 through which fuel is placed in the stove, the opening being normally closed with a cover as 5.

In carrying out my invention I provide a cast metal piece 6 fitted in an opening 7 formed in the upper portion of the front of the stove in substantially the position shown. This element 6 is hollow and open at the front as at 8. In the opening 8 is supported by webs as 9 a threaded plate 10 on which is mounted a closure 11, the threaded engagement of the closure with the plate 10 permitting it to be advanced to close the opening 8 or retracted to open the same. The element 6 has a downwardly extending portion 12 lying substantially parallel with the front of the stove and provided with a shoulder as 13 upon which is mounted a depending pipe 14: terminating a distance above the bottom of the stove as shown. In the inner side of the element 6 and communieating with the interior of the element and the interior of the stove chamber 15 are orifices as 16. These orifices may be proby the arrow 17. VJith the closure wide open the demand of the draft at 17 is met by a free flow of air through the pipe 1 1 and thence almost directly into the fuel mass so that free and vigorous combustion takes place. At the same time this movement of the air and the suction through pipe 2 draws a small stream of air through each orifice 16 so that sutiicient circulation is set up in the upper portion of the fuel chamber to effectually prevent the accumulation of smoke and gases at that point and consequently to completely eliminate the danger of puffing. Air introduced in this manner of course means rapid combustion of the fuel and an exceedingly hot tire because the introduction of the air ets at 16 promotes combustion and effects the burning of gases that would otherwise be wasted.

If, now, the closure 11 is tightened up until barely a crack remains to permit the entrance of air to the interior of part 6, then no air at all is fed to the fuel at the lower end of pipe 14, indicated at 18, but the draft at pipe 2 draws it all through the orifices 16 into the chamber 15 above the fuel therein. The result of this action is that the fire quickly dies down to a smouldering mass that will burn clearly for a long period of time, the jets at 16 effectually preventing the collection of smoke and gases above the mass.

It may now be readily seen that I have provided a construction wherein the harmful accumulation of smoke and gases above the fuel mass in the fuel chamber is effectually prevented, and also one wherein the fire may be so controlled as to yield the maximum amount of heat for the fuel consumed, and to burn slowly or rapidly as may be desired without in either case materially increasing the amount of smoke and gas to be discharged as waste through pipe 2.

It is to be understood, of course, that while I have herein shown and described but one specific embodiment of the invention, changes in form, construction and method of operation may be made within the scope of the appended claims.

I claim:

1. The combination with a stove body having a vent pipe opening in its rear upper portion, of a conduit extending from the front upper portion of the stove body downwardly within the stove body to a point adjacent the bottom thereof, means for controlling the flow of air through the conduit and means for introducing one or more jets of air from said conduit into the upper portion of the stove.

2. A stove having an opening formed in its upper rear and forward portions, an adjustable closure for the forward opening, a conduit extending from the forward opening downwardly to a point adjacent the bottom of the stove and Within the same, and means for introducing one or more jets of air from 

